C4 starting problem
Thread Starter
Advanced
Joined: Oct 2009
Posts: 64
Likes: 0
C4 starting problem
I recently replaced the fuel injectors in my '90 L98. Since then, the fuel rails don't seem to remain charged if I let it sit overnight. Once I get it started and let it run for awhile, then it starts normally the rest of the day. There are no gas leaks anywhere, and no gas smells. Any ideas on what can cause this.
Race Director
Joined: Dec 2006
Posts: 10,383
Likes: 4
When you first move the key from off to run (not start) do you hear the fuel pump run at all? If not, check the fuel pump relay.
If you attach a fuel pressure gauge to the rail and tape it to the outside of your windshield you can watch the fuel pressure and will know if it is a fuel pressure related issue.
If you attach a fuel pressure gauge to the rail and tape it to the outside of your windshield you can watch the fuel pressure and will know if it is a fuel pressure related issue.
